Kent · England
Coxheath Sand Mastic
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for householders, landlords and businesses in Coxheath. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Mastic that needs renewing before redecorating
- Modern sealant on a period surround
- Mastic round period door frames that has failed
The process
There isn’t much for you to do on the day. Point us to the joints and we will get on with it. The work itself takes a few hours for a single window, longer for several, including the tidy-up. Parking around Coxheath is usually easier than in a town centre, but mention any lanes, gates or long drives. For outside work, side access and the height of the joints help us plan.
- We check each window surround and the condition of the joint.
- The joint is raked out and cleaned.
- Large voids are packed out.
- New sand mastic is applied and shaped by hand.
- The finish is dressed neatly.
Preparing for the visit
- Mention any sign-in or site rules at work premises
- Tell us if parking is tricky
- Tell us about any water getting in
How to get a quote
For sand mastic in Coxheath, phone 0345 464 0079 or drop us an email. Tell us what the problem is and where, and you will get a clear quote before we start.
Related advice
Sand mastic in Coxheath
Silicone on a period window often looks wrong and does not suit the building. Sand mastic gives a finish that matches the age of the house and we can swap the silicone for it. If you are dealing with gaps where the frame meets the masonry and cement or filler used on old window joints that has cracked, we can put it right.
In a smaller place like Coxheath, some walls face open ground and catch the full force of the weather, so exposed windows and doors face the weather head on. That is hard on the mastic around frames and sills.
The work is guaranteed for twelve months. If there’s a problem with our work within the year, let us know and we will sort it.
- Location
- Coxheath (ME17, ME15)
- Region
- Kent
- Cover
- One year on every job
- Quotes
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Why act early in Coxheath
Not every filler suits an old window surround. Sand mastic matches what was there and that can be important for listed homes. In a smaller place like Coxheath, wherever a wall is exposed, a failed outside joint is a real source of damp. Inside, a split seal lets water into floors and panels just as it would anywhere.
There are no prices on our website, because each job is priced on what it involves. For a quick quote, please call 0345 464 0079 or email us and we will talk you through it.
What you get with us
- Rated 4.9 stars on Google
- Every job guaranteed for a year
- Anti-fungal silicone where joints get wet
- Tidy, careful work
Take a look at our cost guide or our reviews.
Work for landlords, hotels and businesses
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
Landlords and agents in Coxheath can book us as well as homeowners. Resealing between tenancies is a simple way to keep a property in good order before the next move-in.
When to call us in Coxheath
Timber swells and shrinks with the weather. The movement cracks the mastic little by little.
Signs it’s time to call us include:
- Tired mastic found when preparing windows for paint
- Draughty sash windows at the surround
- Cement or filler used on old window joints that has cracked
- A silicone bead on a sash window that spoils the look
For landlords with property near East Farleigh station, older sash windows in a rental need their mastic kept sound to keep the weather out.
Comparing quotes
- What happens if the job turns out different
- Whether they’re fully insured
- Is the old sealant removed completely?
- Which colour the sealant will be
Places near Coxheath
What else we do in Coxheath
Windows and doors in Coxheath
Historic houses like Stoneacre (about 3.7 miles east) are a reminder that the area around Coxheath has older buildings as well as new. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window. The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
For site and facilities teams at buildings such as Coxheath Primary School, the mastic around its windows and doors needs looking after like any other building’s. Homes close to Holy Trinity Church include some older properties, and the joint between an old wall and a newer frame is normally the first place rain gets in.
Coxheath is about 3 miles south-west of Maidstone, in Kent. Coxheath gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. Our Kent coverage runs to 922 places, Coxheath among them. We also work in London, around 31 miles away.
All of ME17 and ME15 is covered for sand mastic. Local streets include Westway, Stockett Lane and Orchard Close. Neighbouring places we cover for sand mastic include Dean Street (1 mile north), East Farleigh (1 mile north-west), Farleigh Green (2 miles north-west), Kettle Corner (2 miles north-west) and Hunton (2 miles south-west). Within a short drive, we also cover Maidstone (3 miles north-east), Sittingbourne (13 miles north-east), Sevenoaks (14 miles west), Royal Tunbridge Wells (12 miles south-west), Gravesend (14 miles north) and Tonbridge (10 miles west).
Around Coxheath
We work in homes and buildings around The Horse Shoes Public House, Cornwallis Academy and Quarry Wood and the streets around them. The nearest railway station is East Farleigh station, about 1.5 miles north. Other landmarks nearby include The Mall Maidstone (3 miles north-east) and Oakwood Hospital (2.4 miles north).
Should I try it myself first?
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, and the work is guaranteed for a year.
Your questions about sand mastic in Coxheath
Will you come out to Coxheath?
Yes. Coxheath is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Can you do sand mastic in Coxheath?
Yes, Coxheath is within the area we cover. Our work covers London and the South East. Just phone 0345 464 0079 or drop us an email with a few details of the job, and we will send you a clear quote.
Can new sealant go over the old?
No. New silicone will not bond to old silicone, and it traps any mould or water underneath. It all has to come out first.
Does someone need to be in?
If the work is inside, we need someone to let us in. Once we have agreed the job, you don’t need to watch us work.
Are you an approved applicator?
Yes. We are ARBOMaster approved, the scheme for applicators of Arbo sealants.
Can you quote for more than one area?
Of course. Combining jobs makes good use of the visit.
What do you put in the joint?
We choose the sealant for the joint, not the other way round. Movement, water and weather all affect the choice, and we will explain our choice.
Can I paint the new mastic?
It’s traditionally left unpainted, which is what traditional guidance recommends. Ask us before decorating.
Keeping the joints in good condition
Looking after new joints is easy:
- Go gently near the mastic when preparing windows
- Find out about consent before window work on a listed home
- Renew mastic before redecorating the windows
- Avoid patching sand mastic with silicone
Keep paint scrapers and sanders off the mastic when redecorating. Hard scraping can loosen it.
Good mastic helps keep the frame dry. Failed mastic lets water reach the timber, which can lead to rot.
How we quote for sand mastic
Some jobs are bigger than they look, and some smaller. The main factors:
- The number of rooms or windows
- Access and height
- Any working-time requirements on site
- How much there is to do
What you pay reflects the work, not guesswork. That’s why we ask a few questions first and agree the price before starting.
Asking for a quote
There’s no need for technical detail. It helps if you can tell us:
- A few pictures by email, if you can
- Whether it has been sealed before
- The type of property
- What’s wrong with the joints now
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we will talk you through what we’d do. When it suits you, phone 0345 464 0079 or send us an email.